Safety padlock



' lWALTERunionstrain, orBERmrLQGERi/LANY.

SAFETY PADLOCK. L

j specification of Letters Patent. Patented' Jun'efZO, 192.2..

A Application fue@ January 12,1922. serial no.I 528,605. f

To all whom it may concern.'

Be it known that I, VALTER REICHSTEIN, a citizen of the German Republic, residing at Berlin, Germany, have invented certain new and useful Improvements in Safety Padlocks, of which the following is a specification. v

This invention relates to a safety padlock with ring-shaped tumblers. According to this invention the tumbler rings are mounted upon a guide cylinder so that they can be discs characters, figures or signs are marked,

preferably figures from 0 to 9, so that the roper position ofthe discs can be indicated by a number, or by a word. Any of the figures marked on the discs can be chosen as a mark for the adjustment of the discs to a osition in which the lock may be opene so that it is impossible to discover thevnumber which permits opening of the padlock.

This improved padlock presents further the advantage that it can not be opened by an unauthorized person, either mechanically or through adjustment of the rings. Owing to the fact that the shackle is made in one part and because vthe two arms of this shackle penetrate into thebody of the padlock it would require far too much time to break the padlock open.

In the drawings: j

Fig. l is a side elevation of the improved padlock; .v

Fig. 2 is a vertical section of the same;

Fig. 3 is a sectional view of a tumbler ring;

Fig. 4 1s a plan view of the same;

Fig. 5 is avertical sectional view of the inner part of thepadlock casing; and

Fig. 6 is a plan view of the same.

The body of the padlock consists of two fixed discs a which are vconnected by means of a bolt b and which enclose a guide sleeve c having a vertical groove d. The tumbler rings f are revolubly mounted upon said guide sleeve c and are of angular cross section, each ring having in thef inwardly projecting flange a semi-circular notch g, the notches of all the tumblerrings forming with the groove ci ofthe guide sleeve a channel for the reception of one of the arms ofthe bow-'shaped shackle It. This arm of the shackle h has notches i designed to receive the tumbler rings f. The ,other toV arm of the shacklefis not locked by the tumbler rings but merely inserted through registering holes of the fixed discs a and of the guide sleeve c., The shackle h is locked in the padlock through the medium of the tumbler ringsand it can be removed only when all the rings f have been adjusted so that their notches g register with the notched arm of the shackle.

Upon the circumference of the fixed discs a and ofthe'tubular rings y figures fromr()V to 9 are' marked, the figures in vertical direction forming a number, the first and last y figure of which are fixed, all the intermediate figures being adjustable. As any of the j numbers capable of being Vformed by the,

figures can be used as a predetermined mark` for opening the lock, a great variety of' com- V85 binations isv possible so that for 'any un-v authorized person it is impossibleV to find'` out the correct number.

I claim;

A safety padlock comprising a fixed upper disc having a pair of apertures, a fixed ,y

lower disc having a single aperture, both of said discs having predetermined symbols produced upon their peripheries, a bolt riveted in said discs and connecting the same in spaced relation, a cylindrical guide sleeve located between said discs and havinga groove of semi-circular cross`- section, extending lengthwise thereof, said sleeve havingv an aperture in registry with one of the apertures of said upper disc and with the aper ture of said lower disc, tumbler rings having.- peripheral flanges and inwardly extending! anges, the latter being rotatably mounted upon said sleeve and having inwardly open semicircular notches adapted to register with each other in the axial 'direction ofv j' the lock and with the groove of saidsleeve transversely of said lock to form an interior channel, said peripheral flanges having predetermined symbols produced thereon for co-operation with each other and with they symbolsV of said upper and lower discs to form a predetermined combination and a bow-shaped shackle havlng two arms, one

rof which is arranged t0 be inserted through flanges of said tumbler rings to lock said l0 shackle in said padlock.

- In testimony whereof I affix my signature in presence of tWo Witnesses.

WALTER REICHSTEIN.

Witnesses 4 ADOLF SGI-IUHMAGHER, SALVADOR BUEHON. 

